Gronk gets 1-Day Suspension for hit out of bounds on player laying on ground

Rob Gronkowski (Patriots) got a 1-day suspension for his hit on the Buffalo DB laying face down on the sideline after an INT. Meanwhile, two other players get 1-day suspension for helmet to helmet hits. If you watch the Gronk hit it is one of the worst things anyone has ever done after the play was over. Gronk had to walk 3-4 yards back to the guy laying on the ground when he lowered his shoulder and drove it into the back of the guy’s head. I think it should have been a 4-Game suspension. Now Gronk can appeal it. Will they go from 1 to 0 after he knocks someone out? The NFL is a joke!